If you are not sure, assume that an idea is not common knowledge and cite the source. It is much easier to remove a citation than it is to hunt down a citation and try to add it later. Finally, when in doubt, check with your professor.
Taking vitamin supplements will boost your energy level only if you are deficient in them. In particular, our bodies need B vitamins to release the energy in foods. The family of B vitamins includes B1, B2, B3, B5, B6, B7, B12 and folic acid. Taking large amounts won't give you extra energy, however, so it isn't wise to consume more than the recommended daily allowance.
B Vitamins. The B vitamins are thiamine, riboflavin, niacin, pantothenic acid, pyridoxine, biotin, cobalamin and folic acid. They work together to help your body produce energy from food. They also help make red blood cells, which carry oxygen and nutrients throughout your body.